Neighbor Replication Technique for Web Server Clusters

With the ever increasing applications in WWW such as distance learning education and e-commerce, the need for the reliability of the non-stop cluster web server is likely to increase. Thus, providing reliable and efficient services are the primary goals in designing a web server cluster (WSC) due to the constraints in the eventual failure of hardware/software components. In order to provide reliable services, WSC needs to maintain the availability of some replicas while preserving one-copy consistency among all replicas. In this paper, a replication technique called neighbor-replica distribution technique is proposed to get high data reliability to the web server cluster systems. Data from one node will replicate to other nodes, which are neighbors to it